Platform or staging support.



No. 760,995. PATENTED MAY 24, 1904.

S. G. JOHNSON. PLATFORM 0R STAGING SUPPORT.

APPLICATION FILED D110. 31. 1902.

N0 MODEL.

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UNITED STATES Patented. May 24, 1904.

SIMON C. JOHNSON, OF DEKALB, ILLINOIS.

PLATFORM on STAGING SUPPORT.

SPECIFICATION forming part of Letters Patent No. 760,995, dated May 24,1904;.

Application filed December 31, 1902. Serial No. 137,357. No model.) i

. To all whom it may concern:

Be it known thatI, SIMON C. J oHNsoN,a citizen of the United States,residing at Dekalb,

in the county of Dekalb and State of Illinois,

have invented a new and useful Platform or Staging Support, of which thefollowing is a specification.

The present invention relates particularly to supporting means fortemporary staging or platforms employed in the erection of theprojecting portions of chimneys, though useful for various otherpurposes, as will be evident to those skilled in the art.

It is the object of this invention to provide a structure which isplaced upon a roof and is adjustable to various degrees of inclinationand differentdistances from the ridge, so that the platform or stagingmay be located in the most convenient place with relation to the chimneybeing built and at the same time be supported in a horizontal position.

It is also the aim to obtain a structure which is extremely strong andrigid and at the same time light and capable of being compactly folded.V

The preferred embodiment of the invention is illustrated in theaccompanying drawings and is described in the following specification.It will be seen, however, upon an inspection of the claims heretoappended that the structure shown and described is open to variouschanges and modifications.

In the'drawings, Figure 1 is a perspective view of the improved support.Fig. 2 is a detail perspective view of one of the sections.

of the hanger member. Fig. 3 is a cross-sectional view through thehanger member, and Fig. at is a detail cross-sectional View taken on theline 50 m of Fig. 1.

Similar reference-numerals indicate corresponding parts in all thefigures of the drawings.

'- In the embodiment shown-the structure comprises as a whole a hangermember, a supporting member, and a platform member. The hanger membercomprises a lower and an upper section, these sections being slidablyassociated and constructed in the following manner: The lower memberconsists of spaced side bars 10, formed of angle-iron, the outer flangesof which are arranged vertically,-the inner flanges extending towardeach other,thus forming guideways. These side bars 10 are fastened attheir lower ends to a transverselydisposed base-arm 1 1, also formed ofangle-iron and extending well beyond the sides of the structure forminga broad base,as will be readily seen. The upper section ofthe hangermember is in the form of a substantially U-shaped frame 12, also formedof angle-iron, the side bars 13 slidably engaging in the guidewaysformed by the flanges of the side bars 10 and being connected at theirlower ends by the crosspiece 14. The upper ends of the side bars 13 areprovided with depending hooks 15, which are arranged to engage over theridge of a roof, as indicated in Fig. 1. The side bars 13 are,furthermore, held in their parallel relation by diagonally-disposedcross-braces 16, suitably secured at their ends to said bars. The twosections of the hanger element are normally held against relativemovement by a bolt 17, arranged at the upper end of the lower section,this bolt passing through the overlapping portions of the side bars,those of one section (in this instance the upper one) being providedwith a plurality of openings 18, through which the bolt may be passed,so that the sections may be fastened in different rela- .tive positions.

The supporting member of the structure is in the form of aninverted-U-shaped frame 19, also formed of angle-iron, thereby formingspaced standards 20, which are pivoted attheir lower ends to the sidebars 10 by suitable rivets 21 or other fastening devices.

One of these pivotal -connections is clearly illustrated in Fig. 4. Itwill be observed that alined openings are formed through the upstandingflange of the side bar 10 and the adjacent flange of the standard. Asleeve 22 is passed through these alined openings, and the rivet 21extends through the sleeve and is headed over the ends of the same andthe adjacent portions of the side bar and stand- The standards 20 areconnected at their IOO lower ends of which constitute shoulders, as willbe readily understood. These standards are, furthermore, made rigidbydiagonallydisposed braces 25. The platform member consists of spacedsupporting-bars 26, pivoted at their inner ends to the upper ends of theside bars 10, their outer ends having depending hooks 27, arranged to bepassed through the openings 24 of the standards, these supporting-barsbeing strengthened and braced by tie-rods 28.

It will be understood that in use a number of these structures areemployed, which are located on opposite sides of the chimney andpreferably on opposite sides of the ridge of the roof. The hooks areengaged over the ridge in the manner indicated in Fig. 1, and the hangermember is elongated, so that the platform-support will be in properposition with relation to the chimney being built. The supporting-armsare then placed in horizontal position and supported there by engagingthe hooks in the proper openingsof the standards. As a result a strongsupport is provided which will notaccidentally collapse, it beingunderstood, of course,.that the boards are'laid upon the platformmember.

It will be apparent that this structure is both light and strong, sothat it may be easily placed in position and when not wanted can becollapsed and compactly folded. Furthermore, it is adjustable to suitthe various requirements of the work, and while described particularlyfor the purpose of building chimneys it will be evident that it may beemployed for other purposes.

From the foregoing it is thought that the construction, operation, andmany advantages of the. herein-described invention will be apparent tothose skilled in the art without further description, and it will beunderstood that various changes in the size, shape, proportion, andminor details of construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a structure of the class described, the combination with aninclined member, of a supporting member including spaced standardspivoted at their lower ends to the inclined member and consisting ofangle-iron, certain of the flanges of which are disposed transversely ofthe inclined member and have a vertical series of openings therethrough,and a platform member pivoted to the inclined member and havingdownturned hooks at its free end that engage in the openings of thestandards.

-2. In a structure of the class described, the combination with aninclined member, of a supporting member consisting of a bar bent to formspaced standards connected at their upper ends and pivoted at theirlower ends to the inclined member, said standards being provided with alongitudinally-disposed series of openings therethrough, and a platformmember hinged to the upper portion of the inclined member and comprisingspaced bars having downturned hooks at their free ends that respectivelypass through the openings in the standards and engage over the outerfaces thereof.

3. In a structure of the class'described, the combination with aninclined member comprising spaced side bars, of a supporting memberconsisting of an angle-bar bent to form spaced standards connected attheir upper ends and pivoted at their lower ends to the side bars of theinclined member, certain of the flanges of said standards beingtransversely disposed and provided with openings, and a supportingmember comprising spaced side bars pivoted to the inclined member andhaving downturned terminal books that pass through the openings in thestandards.

4. In a structure of the class described, the

combination with an inclined member comprising spaced side bars, of atransverse basearrn connecting and secured to the lower ends of the sidebars and extending beyond the same, forming an extended base, an uprightsupporting member pivoted to the inclined member and having a verticalseries of openings, and a platform member also pivoted to the inclinedmember and having a hook at its free end that detachably engages in theopenings. I

5. In a structure of the class described, a hanger member comprising alower and an upper section, said upper section consisting of a bar bentto form spaced side bars connected at their lower ends and having hooksat their upper ends, means for securing the sections against relativemovement, and platform-supporting means carried by the lower section.

6. In a structure of the class described, a hanger member comprising alower and an upper section, the lower section consisting of spacedangle-iron side bars, platform-supporting means arranged upon the lowersection, the upper section being slidably associated with the lowersection and comprising spaced side bars slidably arranged between theflanges of the side bars of the lower section, clownturned hooksarranged upon the upper ends of the side bars of the upper section, and

means passing through the several side bars for securing the sectionsagainst movement.

7. In a structure of the class described, a hanger member comprisingalower and an upper section, the lower section consisting of spacedangle-iron side bars, platform-supporting means arranged upon the lowersection,

the upper section being slidably associated with the lower section andcomprising a substantially U-shaped frame of angle-iron, the spaced sidebars of which are slidably aring member pivoted to the hanger member andhaving a vertical series of openings, and 5 a platform member alsopivoted to the hanger member and having a downturned hook at its freeend that is arranged to engage in the openings of the supporting member.

In testimony that I claim the foregoing as 20 my own I have heretoaflixed my signature in the presence of two Witnesses.

SIMON C. JOHNSON.

Witnesses:

BENJ. S. WHITE, GEORGE H. MILLER.

